The impact of aerosols on the atmosphere is widely acknowledged as one of the most significant and uncertain aspects of climate change projections. The observed global warming trend is considerably less than expected from the increase in greenhouse gases, and much of the difference can be explained by aerosol effects. Aerosols impact climate through direct scattering and absorption of incoming solar radiation and trapping of outgoing long-wave radiation as well as through alteration of cloud optical properties and the formation of clouds and precipitation.

Within its mandate in the areas of weather, climate and water, WMO focuses on many different aspects and issues from observations, information exchange and research to weather forecasts and early warnings, from capacity development and monitoring of greenhouse gases to application services and much, much more.

Start date

21 March 2017

24

End date

24 March 2017

Location: Ushuaia, Argentina

The Session will review activities under the Observations, Research and Services frameworks of EC-PHORS, consider recommendations from the Global Cryosphere Watch (GCW) Steering Group, provide further guidance to them, and...